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Determination of prochloraz in edible fungi by UPLC

Xing Zeng-tao

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Abstract

A method was established by UPLC to determine prochloraz residue in edible fungi.The sample was extracted with acetonitrile,decontaminated by PCX solid phase extraction cartridge,and then detected by UPLC.Methanol and 0.05%ammonia water(60/40,v/v) solution were used as mobile phase and isocratic elution was conducted at 0.4 mL/min.Within 0.1-10μg/mL there was a good linear correlation(R≥0.999) between the peak area and concentration of prochloraz.By this method the detection limit for prochloraz was 0.05 mg/kg,the recovery rate was 92.1%-98.9%,and the variation coefficient 0.79%-6.33%.

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What this paper is about

A method was established by UPLC to determine prochloraz residue in edible fungi.The sample was extracted with acetonitrile,decontaminated by PCX solid phase extraction cartridge,and then detected by UPLC.Methanol and 0.05%ammonia water(60/40,v/v) solution were used as mobile phase and isocratic elution was conducted at 0.4 mL/min.Within 0.1-10μg/mL there was a good linear correlation(R≥0.999) between the peak area and concentration of prochloraz.By this method the detection limit for prochloraz was 0.05 mg/kg,the recovery rate was 92.1%-98.9%,and the variation coefficient 0.79%-6.33%.

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Available abstract

A method was established by UPLC to determine prochloraz residue in edible fungi.The sample was extracted with acetonitrile,decontaminated by PCX solid phase extraction cartridge,and then detected by UPLC.Methanol and 0.05%ammonia water(60/40,v/v) solution were used as mobile phase and isocratic elution was conducted at 0.4 mL/min.Within 0.1-10μg/mL there was a good linear correlation(R≥0.999) between the peak area and concentration of prochloraz.By this method the detection limit for prochloraz was 0.05 mg/kg,the recovery rate was 92.1%-98.9%,and the variation coefficient 0.79%-6.33%.

Key concepts: Chromatography, High-performance liquid chromatography, Cartridge, Residue (chemistry), Solid phase extraction, Chemistry, Detection limit, Elution

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